Create simple `FileSystemWatcher`

finchie

Dec 15, 2025, 1:30 PM

VKCHFDMCESSKL5AVZB3PNHAX2N2V4KOQ7OOZ6BHZE2AILFBJ2QMAC

Dependencies

• [2] WFWTKCJN Create initial Visual Studio Code extension
• [3] YKBMKWDP Refactor event handling to support both namespaces and objects

Change contents

• replacement in extensions/vscode/src/vscode_sys/workspace.rs at line 8
  [2.54597]→[2.54597:54724](∅→∅)
  − TextDocument, TextDocumentChangeEvent, TextDocumentContentProvider, Uri, WorkspaceFolder,

  − WorkspaceFoldersChangeEvent,
  [2.54597]

  [2.54724]
  + FileSystemWatcher, TextDocument, TextDocumentChangeEvent, TextDocumentContentProvider, Uri,

  + WorkspaceFolder, WorkspaceFoldersChangeEvent,
• edit in extensions/vscode/src/vscode_sys/workspace.rs at line 28
  [2.55235]

  [2.55235]
  + "createFileSystemWatcher":

  + create_file_system_watcher(

  + glob_pattern: &str,

  + ) -> FileSystemWatcher<'env>;
• replacement in extensions/vscode/src/vscode_sys/mod.rs at line 16
  [2.58883]→[2.58883:58944](∅→∅)
  − function_setter, interface_builder, static_class_method,
  [2.58883]

  [2.58944]
  + function_setter, interface_builder, object_event_handler, static_class_method,
• edit in extensions/vscode/src/vscode_sys/mod.rs at line 179
  [2.63318]

  [2.63318]
  + }

  + }

  + interface_builder! {

  + FileSystemWatcher {}

  + }

  + object_event_handler! {

  + FileSystemWatcher {

  + "onDidChange": on_did_change(Uri);

  + "onDidCreate": on_did_create(Uri);

  + "onDidDelete": on_did_delete(Uri);
• edit in extensions/vscode/src/lib.rs at line 268
  [2.117875]

  [2.117875]
  +

  + #[tracing::instrument(skip_all)]

  + pub fn handle_fs_watcher_event(env: &napi::Env, uri: vscode_sys::Uri) -> Result<(), napi::Error> {

  + let mut extension_state = crate::ExtensionState::get()?;

  +

  + if let Some((repository_path, open_repository)) = extension_state

  + .repositories

  + .get_open_repository_mut(env, &uri)?

  + {

  + let absolute_file_path = Utf8PathBuf::from(uri.get_fs_path()?);

  + let relative_file_path = absolute_file_path

  + .strip_prefix(&repository_path)

  + .map_err(|error| {

  + napi::Error::from_reason(format!(

  + "Failed to strip prefix {repository_path} from {absolute_file_path}: {error}"

  + ))

  + })?

  + .to_path_buf();
• edit in extensions/vscode/src/lib.rs at line 287
  [2.117876]

  [2.117876]
  + open_repository

  + .repository

  + .update_path_state(relative_file_path)

  + .map_err(|error| {

  + napi::Error::from_reason(format!("Failed to update path state: {error:?}"))

  + })?;

  + open_repository.update_resource_states(env, &repository_path)?;

  + }

  +

  + Ok(())

  + }

  +
• edit in extensions/vscode/src/lib.rs at line 383
  [2.120996]

  [2.120996]
  +

  + let file_system_watcher = vscode_sys::workspace::create_file_system_watcher(env, "**")?;

  + file_system_watcher.on_did_change(env, handle_fs_watcher_event)?;

  + file_system_watcher.on_did_create(env, handle_fs_watcher_event)?;

  + file_system_watcher.on_did_delete(env, handle_fs_watcher_event)?;